Material-dependent dyeing process:
Polyester fiber characteristics (dense) – hot melt dyeing, high temperature and high pressure dyeing – selected dyes – disperse dyes – temperature – (hot melt dyeing) around 190 degrees Celsius – (high temperature and high pressure dyeing) around 130 degrees Celsius.
2. Nylon (protein product)
Nylon fiber characteristics (with reactive functional groups) – steaming process – selected dyes – (weak) acid dyes – temperature – about 100 degrees Celsius.
3. Cotton products (cellulose fiber)
The basic process and process of the dyeing workshop
Into the belt – before the water wash – pre-drying – color tank – pre-bake (infrared) – high temperature baking – after water washing (reduction cleaning) – after drying – drop belt.
The role of infrared pre-baking:
The dye molecules are initially attached to the fibers to prevent problems such as coloring.
The role of high temperature baking:
The dye molecules are fully incorporated into the interior of the fiber to complete the process of dyeing the dye onto the fiber.
Restore cleaning effect:
The excess dye molecules are decomposed to ensure the color fastness of the product.
2. Nylon fiber
Into the belt–color tank–hot steam from steaming–after washing–post-drying–drop belt
The role of steaming:
The acid dye molecules are sufficiently reacted with the corresponding functional groups in the fibers to complete the process of dyeing the fibers with acid dyes.
The role of washing:
Remove dye molecules that are not fully reacted to ensure color fastness of the product.
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